Back in 98, they had Sinbad (okay he hasn't been relevant since A Diff World, but he is a funny comedian), the they had Triple H, which I thought was good---make the connection between WWE (although that WBF debacle still leaves a bad taste in the IFBB's mouth)...
So, why no more? Was it too expensive to pay them? Yeah, like Muscletech or Gaspari can't cough up the dough to provide that, or the ones who put on the show...It would be good PR...
They could get Shannon Sharpe or Marcus Allen, both of them enjoy bbing and were at several bbing shows...even Halle Berry has been to a couple shows--bur she commands a hefty price...
Celeb MCs can lend a certain mainstream voice, and help racket down the spiraling out of control looking physiques....because, like kids, if the world is watching, you are on your best behavior.